Question about Combobox's AutoCompleteMode?

I have a combo box that needs to be autoupdatable. I know you can set the AutoCompleteMode to SuggestAppend and have the combobox suggest as you type values that are in a combobox's items list. My question is this, Is there a way to have this same functionality happen with a databound combobox? I have a combobox that is bound to a Dataset and it will only suggest the first letter typed in the items list. If I type a different letter it jumps to another section in the list corresponding to the new letter typed.

Does anyone know how I can get around this and have the SuggestAppend functionality be available in a databound combobox?